Plasma Tube

Ampulab Plasma tubes are coated with lithium heparin or sodium heparin to inhibit clotting. Heparin activates antithrombin, thus blocking the coagulation cascade and producing a whole blood/plasma sample instead of clotted blood and serum.   

Lithium determination should not be preformed in lithium heparin tubes. Samples collected in these tubes are used for plasma determinations in chemistry.